内流

Numerical simulation results show that the fluid flow in Lost Foam Process was different from that in an ordinary green sand mold, the molten metal flow forwards in a circular-arc shape from the ingate, meanwhile, the nature of the gating system influenced the filling process notably. As the polystyrene pattern decomposition has a strong quenching effect on the flowing metal fornt, a high temperature gradient was formed at the flowing metal front, this resulted in the dropping of temperature of the metal to the liquidus temperature quickly and decreased the flowability of molten metal, the temperature distribution in the metal behind, however, was even. The properties of the pattern and the coating affected the temperature distribution remarkably.

从内浇口开始，金属液呈放射状均匀向前充填，同时浇注系统性质显著影响金属液充型过程的流场；由于聚苯乙烯模样气化吸热对金属液的激冷作用，在金属液流端部区域产生很大的温度梯度，使得端部区域金属液很快降至液相线温度，降低了金属液的充型能力，而后续金属液中温度分布则比较均匀，模样性能、涂料性能显著影响这一温度分布特点。

The physics of solid behavior in the two-phase flow of high-density particle phase is carried a step forward, providing the basis of further development of the two-phase flow interior ballistics theory.

从而将火炮装药条件下的高密度固相两相流中固相行为的物理描述向前推进了一步，为火炮两相流内弹道理论进一步发展，提供了一个基本条件。

Analysis indicates that the mechanism of intermittent gas injection production mode to increase output is mainly binging domino of competition adsorption,while that of injection and production mode is mainly displacement .

描述了注气开采煤层气生产过程，分析表明间歇注气生产模式的增产机理主要是竞争吸附置换，而边注边采生产模式主要是驱替；反映基质孔隙扩散能力的综合传质系数不仅影响煤层气井的生产能力，而且影响矿井煤与瓦斯的突出；建立了单井间隙式注气开采煤层气的扩散渗流数学微分方程组；注气过程和采气过程渗流方程式形式相同，但质量源的流向不同，生产井内的边界条件不同。

Research on influence factors of capillary force in immiscible displacement ;2. Analysis indicates that the mechanism of intermittent gas injection production mode to increase output is mainly binging domino of competition adsorption,while that of injection and production mode is mainly displacement .

描述了注气开采煤层气生产过程，分析表明间歇注气生产模式的增产机理主要是竞争吸附置换，而边注边采生产模式主要是驱替；反映基质孔隙扩散能力的综合传质系数不仅影响煤层气井的生产能力，而且影响矿井煤与瓦斯的突出；建立了单井间隙式注气开采煤层气的扩散渗流数学微分方程组；注气过程和采气过程渗流方程式形式相同，但质量源的流向不同，生产井内的边界条件不同。

This paper has made a sufficient survey on domestic and overseas status. It concluded the downhole pressure change regulation under intermittent recovery condition and built up well testing analysis model of bailing wells and intermittent oil recovering wells basing on the infiltrating fluid mechanism and characteristics in production bailing and intermittent oil recovering wells.

本文在充分调研国内外研究现状基础上，根据提捞井及间歇采油井在间歇生产期内油层流体流动渗流机理和渗流特征，总结出间采条件下井底压力变化规律，建立了大庆油田提捞井和间歇采油井试井分析模型。

Based on two-fluid model and kinetic theory of granular flow, numerical simulations were carried out to investigate fluidization behaviors of ferromagnetic particles in magnetically fluidized bed characterized by high granular concentration and strong interactions among particles.

针对磁流化床中颗粒浓度高，相互作用强的特点，在双流体模型的基础上，引入颗粒流的动力学理论，对床内铁磁颗粒在不同工况下的流化特性进行数值模拟。

In this paper, the direct simulation Monte Carlo method is employed to simulate flows of modeled air vehicles having simple geometric shape such as delta wing at a Knudsen number between 0.001 and 0.1 for various Mach number and angle of attack conditions. With the calculated aerodynamic forces and heating, we obtained the general behavior of the rarefied gas effects on the vehicles' aerodynamics.

本文采用直接模拟 Monte Carlo 方法，模拟了简单外型如三角翼形的模型飞行器在努森数为 0.001到 0.1的范围内以不同来流马赫数和不同飞行攻角飞行时的流场，计算了飞行器所受到的气动力和气动热，获得了稀薄气体效应对飞行器气动性能影响的一般规律。

By using Flash software produced a number of fluid flow in the animation, including the viscous flow in vivo experiments indicate friction, rotation speed Dengjiao containers of liquids in relative balance, the system and control of, weak disturbance in the transmission space - Mach cone, the disturbance wave Dissemination process, bypassing the wings of the two-dimensional flows, ease converter and blast crisis and stagnation flow indicate parameters and critical parameters such as the concept that a number of animation, produced by sports meeting between the animation, shape meeting between animation, masking animation and time Axis to achieve those effects the flow of fluid animation, and by adding these buttons used to control the flow of fluid animation, and so will the speed of the fluid flow in a clear show up.

本文利用Flash软件制作了流体若干流动现象的动画，包括粘性流体内摩擦实验示意、等角速旋转容器中液体的相对平衡、系统与控制体、微弱扰动在空间的传播——马赫锥、扰动波传播过程、绕过机翼的二维流动、缓变流与急变流示意以及滞止参数和临界参数的概念说明等若干动画，通过制作运动补间动画、形状补间动画、遮罩动画和时间轴特效来实现这些流体流动的动画效果，并通过添加按钮用于控制这些流体流动的动画的速度等将上述流体流动现象清晰的展示出来。

This paper describes how to use Flash production of viscous flow in vivo experiments indicate friction, rotation speed Dengjiao containers of liquids in relative balance, the system and control of, weak disturbance in the transmission space - Mach cone, the disturbance wave propagation process, bypassing the wings The two-dimensional flows, ease converter and blast crisis and stagnation flow indicate parameters and a number of critical parameters, such as animation.

本文介绍了如何运用Flash制作粘性流体内摩擦实验示意、等角速旋转容器中液体的相对平衡、系统与控制体、微弱扰动在空间的传播——马赫锥、扰动波传播过程、绕过机翼的二维流动、缓变流与急变流示意以及滞止参数和临界参数等若干动画。

This paper describes how to use Flash production of viscous flow in vivo experiments indicate friction, rotation speed Dengjiao containers of liquids in relative balance, the system and control of, weak disturbance in the transmission space - Mach cone, the disturbance wave propagation process, bypassing the wings The two-dimensional flows, ease converter and blast crisis and stagnation flow indicate parameters and critical parameters such as the concept that a number of animation, produced by sports meeting between the animation, shape meeting between animation, masking effects animation and timeline to achieve these fluid flow The animation, and by adding these buttons used to control the flow of fluid animation speed.

本文介绍了如何运用Flash制作粘性流体内摩擦实验示意、等角速旋转容器中液体的相对平衡、系统与控制体、微弱扰动在空间的传播——马赫锥、扰动波传播过程、绕过机翼的二维流动、缓变流与急变流示意以及滞止参数和临界参数的概念说明等若干动画，通过制作运动补间动画、形状补间动画、遮罩动画和时间轴特效来实现这些流体流动的动画效果，并通过添加按钮用于控制这些流体流动的动画的速度。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新